{"instruction": "You are an expert in relationship extraction. Please extract relationship triples that match the schema definition from the input. Return an empty list for relationships that do not exist. Please respond in the format of a JSON string.", "schema": ["origin", "members", "alternate names", "country of headquarters"], "input": "Regional leaders in the  Southern African Development Community  ( SADC ) had named former  Botswana  president Ketumile Masire as a mediator in the dispute but he abrubtly ended a mission here last week complaining that the government had refused to engage in dialogue ."}
{"origin": [], "members": [], "alternate names": [], "country of headquarters": [{"subject": "Southern African Development Community", "object": "Botswana"}]}